- 中国核心期刊（遴选）数据库收录期刊
- 中国科技论文统计源期刊
- 中国学术期刊综合评价数据库来源期刊
| Citation: |
ZHAO Pengcheng, OU Guofu, JIN Haozhe, HUANG Benqing, GU Youjie. Distribution Rule of Multiphase Corrosion Flow and Prediction of Dew Point Top Corrosion Characteristics in Return Flow System of Atmospheric Pressure Tower Top[J]. Corrosion & Protection, 2024, 45(3): 80-87. DOI: 10.11973/fsyfh-202403012
|
Aiming at the return flow system of atmospheric pressure tower top in a refining and chemical enterprise, a multi-component fluid phase-ion equilibrium model was constructed by Aspen Plus software. The gas-liquid equilibrium distribution of corrosive media HCl and H2S in the tower top volatile pipeline was obtained, and the quantitative characteristics of corrosion flow distribution in the tower top pipeline were predicted. The results show that the mole flow rates of HCl and H2S in the aqueous phase increased significantly with the decrease of temperature. The dew point temperature was determined to be 101.2 ℃ by the initial dissolution temperature, and the lowest pH at the dew point could reach 2.59. The dew point corrosion occurred near the outlet pipeline of the tower top. There were three areas with high liquid film coverage in the tower top outlet pipeline, which were the vertical pipe wall of volatile pipeline inlet, the inner wall of the elbow and the lower wall of the horizontal pipe. At the dew point, most of the HCl gas dissolved in the initial liquid film formed by the condensate, so the area where the initial liquid film converges was the area where corrosion occurred frequently.
| [1] |
JIN H Z, WANG C Y, ZHANG L T, et al. Analysis on the corrosion characteristic and risk in atmospheric tower using Aspen plus software[J]. Engineering Failure Analysis, 2021, 122: 105283.
|
| [2] |
TAGHIPOUR A, RAMIREZ J A, BROWN R J, et al. A review of fractional distillation to improve hydrothermal liquefaction biocrude characteristics；future outlook and prospects[J]. Renewable and Sustainable Energy Reviews, 2019, 115: 109355.
|
| [3] |
余进, 王刚, 乔光谱. 常减压蒸馏装置塔顶系统的腐蚀机理与防护措施[J]. 腐蚀与防护, 2019, 40(9): 687-691.
|
| [4] |
GROYSMAN A. Corrosion problems and solutions at oil refinery and petrochemical units[M]//Corrosion Problems and Solutions in Oil Refining and Petrochemical Industry. Cham: Springer, 2017: 37-99.
|
| [5] |
SAXENA R C, JAYARAMAN A, CHAUHAN R K, et al. Studies on corrosion control of naphtha fractions in overhead condensing system using laboratory distillation device[J]. Fuel Processing Technology, 2010, 91(10): 1235-1240.
|
| [6] |
WANG H B, LI Y, CHENG G X, et al. A pH model for calculating the pH value of mixed-acid-base equilibria of overhead condensing systems in crude distillation[J]. China Petroleum Processing & Petrochemical Technology, 2017, 19(4): 95-100.
|
| [7] |
ZARENEZHAD B. A general correlation for accurate prediction of the dew points of acidic combustion gases in petroleum industry[J]. Petroleum Science and Technology, 2014, 32(16): 1988-1995.
|
| [8] |
CYPRIANO D L N, PONCIANO J A C, JAMBO H C M. Crude unit overhead corrosion-pH profile and corrosion rate of carbon steel under controlled condensation[J]. Materials and Corrosion, 2010, 61(11): 955-960.
|
| [9] |
SUBRAMANIAN C. Corrosion prevention of crude and vacuum distillation column overheads in a petroleum refinery: a field monitoring study[J]. Process Safety Progress, 2021, 40(2): e12213.
|
| [10] |
TANG J W, SHAO Y W, ZHANG T, et al. Corrosion behaviour of carbon steel in different concentrations of HCl solutions containing H2S at 90 ℃[J]. Corrosion Science, 2011, 53(5): 1715-1723.
|
| [11] |
LEQUIEN F, MOINE G. Corrosion of a 316L stainless steel in a gaseous environment polluted with HCl: mechanism[J]. Materials and Corrosion, 2021, 72(3): 483-494.
|
| [12] |
WANG J L, TAO Y B, LIU J. Numerical study on acid condensation and corrosion characteristics of three-dimensional finned tube surface[J]. Chemical Engineering Science, 2021, 238: 116600.
|
| [13] |
NIU L N, HAN L, CHEN W W, et al. Analysis and prediction of corrosion risk in atmospheric distillation tower overhead system[J]. China Petroleum Processing & Petrochemical Technology, 2021, 23(1): 21-30.
|
| [14] |
FADHIL A A, KHADOM A A, FU C Y, et al. Ceramics coating materials for corrosion control of crude oil distillation column: experimental and theoretical studies[J]. Corrosion Science, 2020, 162: 108220.
|
| [15] |
韩磊, 刘小辉, 屈定荣. 常减压装置塔顶低温腐蚀评估中的相关计算[J]. 腐蚀与防护, 2019, 40(5): 374-378.
|
| [16] |
李彦鹏, 朱世东, 李金灵, 等. 油气管道H2S/CO2腐蚀与防护技术研究进展[J]. 腐蚀与防护, 2022, 43(6): 1-6,12.
|
| [17] |
OU G F, GU Y J, YU C Y, et al. Failure analysis of ammonium chloride salt coagulation corrosion of U-tube heat exchanger in diesel hydrogenation unit[J]. Engineering Failure Analysis, 2022, 137: 106264.
|
| [18] |
LIU X F, YAO H C, WANG C Y, et al. Failure analysis and prediction based on corrosion thinning behaviour of atmospheric tower top and volatilization line connection area[J]. Engineering Failure Analysis, 2022, 131: 105914.
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: